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Table 2 Definitions of angular and linear measurements used in this study

From: Effectiveness of reverse twin block with lip pads-RME and face mask with RME in the early treatment of class III malocclusion

Measurement Definition
Ba-T-Vert T Angle between basion, tuberculumsella, and vertical T line
Ar-T-Vert T Angle between articulare, tuberculumsella, and vertical T line
SNA The angle between the anterior cranial base and NA plane
SNB The angle between the anterior cranial base and NB plane
ANB SNA minus SNB
WITS Distance between points A and B projected as perpendicular lines along the functional occlusal plane
A-Vert T Distance between point A and vertical T line
Ptm-Vert T Distance between pterygomaxillary fissure and vertical T line
Co-A Distance between condylion and vertical T line
Pr-Vert T Distance between pronasale and vertical T line
B-Vert T Distance between point B and vertical T line
Id-Vert T Distance between infradentale and vertical T line
Co-Gn Distance between condylion and gnathion
Co-Go Distance between condylion and gonion
Go-Gn Distance between gonion and gnathion
Co-Vert T Distance between condylion and vertical T line
ML-SBL Angle between mandibular line and stable basicranial line
NL-SBL Angle between nasal line and stable basicranial line
NL-ML Angle between nasal line and mandibular line
Ar-GO-Me Angle between articulare, gonion, and menton
ANS-Me Distance between anterior nasal line and menton
UI-SN Distance between upper incisor and vertical T line
IMPA Incisor mandibular plane angle
CondAx-Vert T Angle between condylar axis and vertical T line
CondAx-SBL Angle between condylar axis and stable basicranial line
CondAX-ML Angle between condylar axis and mandibular line
Ar-Go-Vert T Angle between articulare, gonion and vertical T line